GE Aespire 7100 Technical Reference Manual page 139

5 Calibration
5.2 Secondary Regulators
&.
WARNING
5.2.1 Testlngf Adjustlng
Secondary Re酬 lato隐时
Balance Regulators
Note: Currentproduction
machines do not include
a secondary regulaωrin
the Air flowhead module.
Ml110140ω/07
When testing N 2 0 regulators
,
nitrous
oxide 刊ows
through the system.
Use a safe and approved procedure to collect and remove i
t.
1. Setthe system switch to Standby.
2. Remove the flowmeter panel shield (Section 9.7.1).
3. Remove the
plug 衍。m
the test port and connect a test device capable of
measuring 689 kPa (100 psi) using 1j8-inch nylon tubing.
Test Ports
4. Set the flow of the tested gas and of O 2 as detailed in the
cha比
5.
Veri巾 thatthe outputof 由e
tested
regulaωr
is within the range listed in the
cha 比
Reøulator Output Aow
Regulated gas
O 2 207
:1:
7 kPa
(30 土 1
psi) 2 L/ min
Air 207
:1:
7 kPa (30
:1:
1
p剑) 2υmin
N 2 0
士 14
kPa
(:1:
2 psi) of O 2 reading
10υmin
6. If required
,
adjust the O 2 and Air regulators to meet the above
Aow
O
2
4 L/ min
specifications. Th e N 2 0 regulator is not adjustable; replace if out of range.
Note: Th e adjustment screws for these regulators are self-Iocking.
7. Disconnectthe test device and plugthe test port(pull on the plugto ensure
it is locked in
the 币tting).
8. Perforrn the Aow Control Tests (Section 3 .4).
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7